As if the output are rated voltage rated current without affecting the use
What is the principle of this? What circuit is used to achieve?
Range 110 to 120, the transformer has the ability to adjust.
Because it is wide voltage equipment, so it can be used
It is designed voltage range is 110V-220V, the adapter should be marked above.
The current digital devices such as notebooks, mobile phones and other power supplies are used switching power supply, allowing a wide range of voltage input, that is, 90-240V voltage input, can be integrated through the high-frequency switching circuit rectifier, output such as DC 3V, 5V, 20V Equal voltage.
This mode and before the transformer through the transformer after the rectifier output DC is not the same, the transformer mode is generally only ± 10% of the voltage range.